04-22-2005
07:52 AM
- last edited on
03-25-2019
02:59 PM
by
ciscomoderator
I have 2 6509 switches connected using Port channel using 6 GigE inetrfaces. 4 out of 6 interfaces show excessive giants.
I checked the speed and duplex settings and I do not see any mismatch. I included the "show int" output for one of the interfaces below.
Any ideas why this is happening?
interface GigabitEthernet1/24
description port channel 1 to switch 2
no ip address
switchport
switchport trunk encapsulation dot1q
switchport mode trunk
channel-group 1 mode desirable
GigabitEthernet1/24 is up, line protocol is up (connected)
Hardware is C6k 1000Mb 802.3, address is 0011.933b.3ae7 (bia 0011.933b.3ae7)
Description: port channel 1 to switch 2
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Full-duplex, 1000Mb/s, media type is SX
input flow-control is off, output flow-control is desired
Clock mode is auto
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:25, output 00:00:39, output hang never
Last clearing of "show interface" counters 3d00h
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 1297000 bits/sec, 282 packets/sec
5 minute output rate 235000 bits/sec, 80 packets/sec
225609840 packets input, 282332161349 bytes, 0 no buffer
Received 538148 broadcasts (502473 multicast)
0 runts, 167204073 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
19302703 packets output, 7387419791 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 PAUSE output
0 output buffer failures, 0 output buffers swapped out
04-22-2005 08:15 AM
I would ensure that the MTU on both switches is the same throughout. If anything you might need to change it to 1552.
04-22-2005 08:42 AM
MTU is set to 1500 through out. Should it be 1552?
04-22-2005 09:21 AM
You can set it that way only on the port channel interfaces and see if that helps.
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